Engine and valve structure



June 5, 1928.

P. G. FRAZiER ENGINE AND VALVE STRUCTURE Filed y 1 1922 2 Sheets-Sheet 1P. G. FRAZIER' ENGINE AND VALVE STRUCTURE Fil y 1922 2 Sheets'$heet 2 vIva/6771 2 fZZ/ M55 W Patented June 5, 1928.

UNITED STATES rm; 9. FRAZIER,

OF ANKENY, I OWA.

ENGINE AND VALVE STRUCTURE.

Application filed May 15,

The object of my invention is to provide an engine and valve structureof simple, durable and inexpensive construction.

More particularly, it is my object to provide the combination of anengine structure with a rotary valve of the generaltype set forth in myapplication, Serial No. 515,548, filed November 16, 1921, the presentapplication showing certain modifications and improvements.

A further object is to provide in such a structure a suitable oilingsystem of'novel construction.

Still a further object is to providea device, having a cylinder orcylinders with a rotary valve mounted above the cylinders 1 and toprovide a cylinder having a combustion chamber with adome-shapedportion.

With these and other objects in'view, my

invention consists in the construction, ar-

rangement and combination of the various parts of my device, whereby theobjects contemplated are attained, as hereinafter more fully set forth,pointed out in my claims,

and illustrated in the accompanying drawings, in which:

Figure 1 shows a vertical, central, sectional view through a deviceembodying my invention; and a Figure 2 shows a transverse, vertical,sectional view taken on the line 2--2 ofFig- ,ure 1. 1

In the accompanying drawings, I have used the reference numeral 10 toindicate generally the engine block, having the water jacket 11 and thecylinder 12;

- Mounted in the cylinder 12 is an ordinary piston 13'. Above the bodyof'the block 10 is the engine head 14, above which is the cap or thelike 15'.

Formed in the engine head 14 above the cylinder 12 is a dome-shapedchamber 16 arranged in direct communication" with the cylinder andhaving at its upper end an upward cylindrical extension 17.

The engine head 14 has the water jacket 18 and the cap 15 has the waterjacket 19. The engine head 14 and cap. 15 have bearing portions 20 and21 formed adjacent to eachother to receive the hollow rotary valve orsleeve 22. v The sleeve-22 has mounted on one end a bevelled gear 23,whichmeshes'with a 1922. Serial N0. 561,153.

bevelled gear 24 on a suitable driving shaft 25.

At the front end of the engine, the gears are covered by a casing cap26, which has an opening 27 arranged to register with the opening in thevalve 22.

The valve 22 is preferably received between what I may for conveniencecall adjustable bearing shoes. Slidably mounted in each cylindricalextension 14 at the top of the dome-shaped combustion chamber portion 16is a tubular sleeve 28. Itmay be here mentioned that while I have in mydrawings shown only one cylinder, my device is intended to be embodiedin multiple cylinder engines. j

At the upper end of the ordinary sleeve 28 is formed the adjustablebearing shoe29 upon which the valve 22 is supported. The

bearing shoes 29 are intended to be vertically adjustable to a limitedextent for the expansion and contraction of the rotary valve 22 and areyieldably held in snug supporting position for the valve 22 by springs.In the particular form ofmy invention illustrated in the accompanyingdrawings, I have shown the springs 30 received in casings 31 screwedinto the member 20, as shown for instance in Figure 2.

The ends of the rotary valve or sleeve 22 are slightly reduced, as at 32and 33, and these'ends are mounted in suitable bearings 34 and 35, whichmay be of any well-known type adaptedto serve the purpose.

Above the valve 22 are the intake and exhaust pipes 36 and 37. On theinterior of the sleeve 22 are diagonallyarranged intake and exhaustpassages 38 and 39., spaced from each other around the valve 22 at theproper distances for eflicient timing and engine operation. I

-The intake pipe 36 communicates with theintake passage 38 of the valve22 through a sleeve 39 similar ingeneral construction to the sleeve28,.having at its lower end a bearing shoe 40, similar to the bearingshoe 29. A

It will, of course, be'understood that at one point in the rotation ofthe bearing 21,

the passa e38 registers with the sleeve 39 and the s eeve' 28.

The exhaust pipe 37 communicates with that While I have shown thesleeves 28, 39

and 41 and the passages .38 and 39 round, they may be elliptical incross section or of any suitable Shape to accomplish the purpose.

The'sleeves 28, 39 and 41 are provided with ring grooves, which receiverings 43 similar to .ordina-ryspring piston rings. These rings have intheir outer surfaces oil grooves 44.

t Mounted in the reduced portions 32 and 33- of the rotary valve 22 aresuitable fans ;or propeller-s 45 for facilitating the rapidity ofmovement of air through the rotary valve or sleeve 22, r l

The exhaust passage 39 may be provided with annular flanges 46 tofacilitate the-coolof the exhaust passage for the radiation of heattherefrom.

I provide an oil supply pipe 47 through i which oil may be pumped tothelupper part of the device. The reduced portion 33 of the valve 22 isprovided with an annular,

external oil groove 48. A passage 49 leads from the oil supply pipe 47through the groove 48, and it will be thus seen that oil will besupplied through the bearing 35.

A hole 50 leads from the groove 48 to the interior of the reducedportion 33. Communicating with the hole 50 is a tube 51, which isextended to the opposite end of the valve 22 and curved aroundthepassages 38 and 39 and communicates with an oil passage 52 leading tothe exterior of the reduced portion 32,'and oil is thus supplied to thebearing 34.

The tube 51 communicates with holes 53 leading to the exterior of thevalve 22 for supplying oil to the shoes 40, 42 and 29./

A passage 54 leads fromthe passage 49 for supplying oil to the sleeve39. A "passage 55 leads from the passage 54 alongside the upper part ofthebearing member 21. Small passages 56 and 57 are "adapted to supplyOil from the passage 55 to the sleeves 3.9 and 41.

The oil discharged through the tube 53 will be carried around by thevalve 22 and will work under the shoe 29 and pass through the passages58 and 59, as shown in Figure 2-, to. the sleeve 28.v

It will thus be seen that oil is supplied through the bearing33 throughthe pipe or tube 47, the passage 49'and the groove 48. Oil is suppliedto the bearing 34 through the passage 49, the opening 50, the

them and the the bearing shoe 29, and will then pass' under said bearingshoe and through the passages 58a11d 59 to the sleeve 28.

The spark plug 60 is preferably mounted in the, wall of thedome-shapedportion 16 of the combustion chamber.

It will be seen from the foregoing that I I have provided with myimproved rotary valve of the type in which the bearings are adjustable,to always properly snugly support the valve, and an oiling system bywhich all the working parts are thoroughly oiled. I

It may be well to mention in this connection that the sleeves 28 and 39and 41 have comparatively little motion, so that no great amount offriction is developed between parts in which they are mounted. Y

By providing the dome-shaped portion 16 of the combustion chamber, Ihave made what I believe to bee; more efficient chamher than any other.'VVith a combustion chamber of this shape, no pocket-s are-left in whichdead .gases can remain,'and the combustion chamber is more thoroughlyscavenged, than would be otherwise possible.

It will also be noted that the movement of the gases will tend to keepthe points of the spark pl-ug60 clean. 1

I have also used the propellers or'fan devices 45 for increasing themovement of air through the rotary valve 22 for thus facilitating thecooling ofthat valve.

The provision of the flanges 46 will help in the cooling of the exhaustpassage 39 H I do not desire to be considered as having limited myselfto the use of this structure with f internal combustion engines, sinceit may be used with steam and other engines.

While some changes may-be made in the construction and arrangement ofthe parts of my improved structure, it is my intention to cover by myclaims, any modified forms of structure or use of mechanicalequivalents,which may be reasonably included within their scope. I 7

I claim asmy invention:

1. In a device of the class described, an engine block having acylinder, a piston in the cylinder, a tubular neck at the intake end ofthe cylinder, a head above the cylinder, havsaid valve casing adjacentto the lower shoe on opposite sides of the tubular extension thereof,and springs in said spring casings for yieldingly pressing the shoeagainst the valve.

2. In a device of the class described, an engine block having acylinder, a piston in the cylinder a tubular neck at the intake end ofthe cylinder, a head above the cylinder, having a tubular valve casingformed therein, a rotary valve in said casing, intake and exhaustpassages adjacent to the valve having tubular necks, bearing shoesfitted into said casing having tubular extensions slidably received 1nsaid necks, spring casings detachably and adjustably mounted in the wallof said valve casing adjacent to the lower shoe on opposite sides of thetubular extension thereof, and springs in said spring casin s foryieldingly pressing the shoe against t e valve, said head being formedin two parts connected approximately at the horizontal middle of thevalve'to allow ready access to the valve springs and spring casings.

3. In a device of the class described, an engine block, having acylinder, a piston in the cylinder, a tubular neck at the intake end of,the cylinder, a head above the cylinder, having a tubular valve casingformed therein, a rotary valve in said casing, a bearing shoe fittedinto said casing having a tubular extension slidably received in saidneck, spring casings detachably and adjnstably mounted in the wall ofsaid valve casing adjacent to said shoe on opposite sides of its tubularextension, and springs in said spring casings for yieldingly pressingthe shoes against the valve.

PEARL G. FRAZIER.

